User talk:Sunakakirutseki

The star is common thing in the universe. It has brightness.There are two kinds of brightness.The true brightness and the apparent brightness. And as usualy, scientist use the apparent brightness. The apparent brightness is the brightness where the magnitude is used. The lower the magnitude the brighter the star. The has A a size and color too. It is based on its temperature. For example the Betelgeuse has a temperature is low as 3,000 degree and its color is red star and its size is super giant. The star has a birth and death too. When the star is born,it is called nebulei. Its color is bluish white, temperature is hot more than the sun. The death of a star is from the super giant star to its size like planet mercury and it begin to explode. It is called supernovae.